this is the wire that is the battery feed to the horn relay? did you put the battery in the trunk? do you have a test light? check to see if the ign switch is getting power with key turned to ign. does everything else work? can you crank the engine over with the key? The old wire that fed the coil does it get power with the key turned on?4 Nova , factory V8 car. I put a 350 in with MSD ignition, Replaced the wire from horn relay to starter. I have nothing at the key. The oil lite glows, but no ignition with the key. Does eliminating the coil affect everything else??